Driller&#39;s mask



Nov. 2, 1948. J. FISHER. 2,452,845

DRILLERS MASK Filed April 5. 1946 2 Sheets-Sheet 1 FIG I I N VEN TOR.

' JAMES FISHER ATI'D RN EYS Nov. 2, 1948. a J, FI HER r 2,452,845

DRILLERS MASK 2 Sheets-Sheet 2 Filed April 5, 194a INVENTOR.

JAME'S- FISHER ATTE] RN EYS Patented Nov. 2 1 948 UNITED STATES PATENTOFFICE DRILLERS MASK James Fisher, Middletown, N. Y.

Application April 5, 1946, Serial No. 659,983

1 Claim. 1

This invention relates to a mask designed to be worn by pneumatic drilloperators, miners or others to prevent dust from entering the mouth andnose of the wearer thereof and to supply clean air for breathing.

An object of the invention is to provide a mask that is light in weight,compact, durable in use and efficient in operation.

Another object of the invention is to provide a mask having meansconnected thereto for preventing dust entering therein and getting inthe nose and mouth of the wearer thereof.

With the above and other objects in view the invention consists of thenovel details of construction, arrangement and combination of parts morefully hereinafter described, claimed and illustrated in the accompanyingdrawings in which:

Figure 1 is a rear view of an embodiment of the invention;

Figure 2 is a plan View thereof;

Figure 3 is a sectional view on the line 33 of Figure 1;

Figure 4 is a front view thereof and Figure 5 is an elevational viewpartly in section of the mask applied to the head of the wearer thereof.

Referring more in detail to the drawings the reference numeral mdesignates the body of the mask which is made of aluminum, tin or lightcopper material. The body approximates an elliptical cone in crosssection having the opposed cut outs I2 which are adapted to engage thebridge of the nose and the chin of the wearer at the center l4 thereofand a portion of the cheeks of the wearer atthe outer ends Iii thereof.The marginal edge of the cutout is provided with felt or rubber paddingl8 Or the like to seal the edge of the body and exclude dust from theinterior thereof.

Positioned in the forward end of the body In is a tapered or conicalopen ended member 20 having outer wall 2| and inner wall 22 and theinner wall is provided with a circular flange 23 at the rear edgethereof which is secured to the outer wall and spaces the inner walltherefrom to form the chamber 24. The outer wall conforms to and issecured to the body 10 by means of fasteners 25- engaging the aperturedears 2! formed on the outer wall 2| outwardly of the flange 23. Thewalls of the member 20 are of greater length than the body In and theinner Wall 22 is provided with opposed outlets 2B and threaded bosses 28to receive the complementary threaded ends of the goose neck tubing 30having the flexible tubing 32 connected thereto which extending beyondthe wearers head as shown in Figure 5 is connected by a Y connection 34to a flexible tubing 36 which may be connected to the air line of thedrill not shown. The tubes 30 passing through in the mask [0 inalignment with outlets 26 openings 31 to be received in the bosses 28.

The inner Wall 22 of the member 20 is provided with spaced andoppositely aligned apertures 38 to permit fresh air to enter the body ofthe mask from the chambers 24.

The sides and top of the body is provided with hangers 40 for attachingthe overhead strap 42 and head encircling strap 44 thereto which straphas a hook 46 for attaching the free end of strap 42 thereto.

Thus a mask has been provided that is to be used when the wearer thereofis using a pneumatic drill. The rubber tubing 32 by attachment to theair hose of the drill serves to force air through the air chamber 24thereby forcing dust away from the wearer, out of the forward open end48 of the chamber 24. The dust being forced away from the wearer themask requires no filters and being made of aluminum or other lightmaterial is easy to wear and adjust.

The member 20 may be removed from the mask for cleaning by removing thefasteners 25 and the goose necks 3-0 from the bosses 28.

It is believed that the above description Will clearly explain theoperation and construction of the device to those skilled in the art andit is to be understood that changes in the details of construction,arrangement and combination of parts may be resorted to provided theyfall within the spirit of the invention and the scope of the appendedclaim.

Having thus described the invention what is claimed as new and desiredto be secured by Letters Patent is:

In a protective mask, the combination which comprises a substantiallyconical-shape casing elliptical in cross section and shaped to fit overthe nose and mouth of a person with the large end in sealing relationwith the face and with the walls thereof converging outwardly from theface, an inner double walled frusto-conical shaped member having innerand outer sections With the inner end of the inner section flanged andwith the flange sealing the inner end of the said frustoconical shapedmember, the walls of the said inner and outer sections of thefrusto-conical shaped member being in spaced relation providing anannular air chamber between the sections and with the outer ends of thechamber open, said 3 4 frusto-conical shaped member positioned in theREFERENCES CITED outer end of the mask with the open end of the chambertherein extended outwardly, and suit- The references are of reccrd m theable connections to the said frusto-conical shaped file of tms patentmember for supplying air to the chamber therein 5 UNI STATES PATENTSwherein the air supplied to the chamber pro- N vides a continuouscircular air screen around the g Name Date Outer end of the mask 1,32 17Darrow Nov. 25, 1919 JAMES FISHER 2,051,730 McCandless Aug. 18, 1936

